21797867

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{7727}}^1$

素因数の和:7778

約数の個数: 16

約数和(自身を含む): 27697152

約数和(自身を除く): 5899285

約数列:

[1, 7, 13, 31, 91, 217, 403, 2821, 7727, 54089, 100451, 239537, 703157, 1676759, 3113981, 21797867]

約数ペア:

[(1, 21797867), (7, 3113981), (13, 1676759), (31, 703157), (91, 239537), (217, 100451), (403, 54089), (2821, 7727)]